Soft universal serial bus hub



FIG. 1 is a perspective view of a soft universal serial bus hub showing my new design;

FIG. 2 is a front elevation thereof;

FIG. 3 is a rear elevation thereof;

FIG. 4 is a left side elevation thereof, the side opposite being a mirror image;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line showing of environmental structures is included for the purposes of illustration and forms no part of the claimed design. 

The ornamental design for a soft universal serial bus hub, as shown and described. 